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Method for achieving multi-system of universal serial bus (USB) flash disk through hidden sector

A multi-system and hidden partition technology, which is applied in the field of U disk multi-system by using hidden sectors, can solve problems such as difficult insertion, failure to insert, and difficult upgrade of image files, and achieve the effect of quick update and replacement

Active Publication Date: 2013-08-07
XIAMEN MEIYA PICO INFORMATION
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Problems solved by technology

[0006] Therefore, in the prior art, for a plurality of system image files, there is no way to burn directly to the U disk root directory like a single system image file; Even if you use some software to view the mirror system files in the hidden partition of the U disk, it is difficult to change and upgrade the mirror files
In addition, it is more difficult to insert the image file in the specified location, especially for the multi-system files in the hidden partition of the U disk, it is impossible to insert the required image file in a certain system file

Method used

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  • Method for achieving multi-system of universal serial bus (USB) flash disk through hidden sector

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[0065] For the U disk hidden partition already has multiple image file systems, assuming the image file is S0, S1,...Sn, n∈N; assuming that the storage sector interval of the image S0 in the hidden partition is Qs0_sectS-Qs0_sectE, and S1 is in the hidden partition The storage sector interval of Sn is Qs1_sectS-Qs1_sectE, and the storage sector interval of Sn in the hidden partition is Qsn_sectS-Qsn_sectE.

[0066] If the xth mirror system file is deleted, x∈(0,n), the storage interval of the zeroth to x-1th mirror system file in the hidden partition of the U disk remains unchanged. For the x+1th mirror System file, its original storage sector interval is Qs(x+1)_sectS-Qs(x+1)_sectE, now becomes (Qs(x+1)_sectS-(QsX_sectE-QsX_sects))-(Qs(X +1)_sectE-(QsX_sectE-QsX_sects)) and so on, until the storage sector of the Sn of the last image system file is (Qsn_sectS ((Qsx_sectE-Qsx_sectS)))-Qsn_sectE-((Qsx_sectE-Qsx_sectS)).

[0067] The last step is to delete the attributes of the ...

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Abstract

The invention provides a method for achieving a multi-system of a USB flash disk through a hidden sector. According to the method, hidden partitions of the USB flash disk are divided, then guide data, layout data, Grldr files and Message menu files are written into hidden partitions, and partition format data files and a plurality of mirror image system files to be started are saved, so that a plurality of system files of the USB flash disk are started. Besides, in hidden partitions of the USB flash disk, if multi-system mirror image files exist, operations such as insertion, deletion and sequencing of mirror image files can be implemented, so that updating and replacement of the multi-system are quick.

Description

technical field [0001] The invention relates to the technical field of computer memory space allocation, in particular to a method for realizing multi-system of U disk by using hidden sectors. Background technique [0002] U disk, full name USB flash drive, English name "USB flash disk", is a miniature high-capacity mobile storage product that uses a USB interface without a physical drive. It is connected to a computer through a USB interface to achieve plug and play. After the U disk is connected to the USB interface of the computer, the data of the U disk can be exchanged with the computer. [0003] However, for the U disk, there is no way to directly burn multiple system image files to the root directory like using a CD to start multiple systems. Only allocate a large enough hidden partition in the U disk, write multiple mirror system files into this hidden partition, and then start the multi-mirror system files through Grldr file boot. [0004] The so-called Grldr is a...

Claims

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Application Information

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IPC IPC(8): G06F12/02
Inventor 顾坚陈集峰黄志炜黄淑贞陈碧秀
Owner XIAMEN MEIYA PICO INFORMATION
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